Ati Rn Adult Medical Surgical 2023 Proctored Exam
Calculation
A nurse is caring for a client who reports taking 0.5 oz of diphenhydramine elixir every night to sleep. The concentration on the client's bottle reads diphenhydramine 12.5 mg/5 mL. How many mg of diphenhydramine is the client taking each night? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
mg
Explanation & Rationale
Calculation: Convert ounces to milliliters 0.5 oz × 30 mL = 15 mL Identify the concentration of the medication 12.5 mg per 5 mL Calculate the dose in mg Dose (mg) = (Volume ÷ 5 mL) × 12.5 mg Dose = (15 ÷ 5) × 12.5 Dose = 3 × 12.5 = 37.5 mg
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